Coal crushing and grinding equipment with anti-blocking function

Abstract

The invention relates to the technical field of coal crushing, and discloses a coal crushing and grinding device with an anti-blocking function, which comprises a shell I, a grinding unit I and a second rotating shaft, the upper side of the shell I is provided with a feeding hole, the grinding unit I is arranged in the shell I, and the grinding unit I comprises a first rotating shaft rotationally arranged on the shell I; a driving device used for driving the first rotating shaft to rotate is arranged on the first shell, and a first grinding roller which is arranged in a non-concentric mode with the first rotating shaft is fixedly connected to the first rotating shaft. The technical means that the first grinding unit and the crushing unit are matched is adopted, a cam is driven by a first rotating shaft to continuously rotate, then the first frame plate and the second frame plate are driven to move up and down on the same side, and in the process that the first frame plate and the second frame plate get close to each other and get away from each other, preliminary crushing of coal and separation of gangue are completed; and the crushed coal is fed into the grinding unit I to be ground, so that the defects in the prior art are overcome, and the normal operation of the equipment is ensured.

Description

Technical Field

[0001] The present invention relates to the technical field of coal crushing, and more specifically, it relates to a coal crushing and grinding device with an anti-blocking function. Background Art

[0002] In the production and manufacturing process of coal, coal needs to be pretreated, and at this time, corresponding crushing and grinding equipment is required to crush and grind the coal raw materials, and initially break them into the particle sizes required for producing various qualities of coal.

[0003] The specific operation is as follows: After simple crushing and screening of the coal raw materials, the coal raw materials are broken into the size required for grinding, and then poured into the crushing and grinding equipment for grinding to obtain coal particles with the required particle size.

[0004] Although the existing crushing and grinding equipment can better complete the pretreatment work before coal production, in the actual process of coal mining, due to the complex and changeable geological conditions, unstable rock structures, and adverse factors such as groundwater and faults, the coal raw materials mined often contain a large amount of gangue, a solid waste with a relatively high hardness, and when the moisture content is high, a viscous coal mixture is likely to appear. In the process of crushing coal raw materials, the existing crushing and grinding equipment often crushes the above substances together with coal, which results in a large amount of solid waste being mixed in the coal entering the subsequent grinding process. Moreover, since the hardness of most solid wastes is greater than that of coal, it will accelerate the wear rate of the grinding equipment and even jam the equipment. The viscous coal mixture is likely to block the cutter head of the grinding equipment. Under the superposition of various adverse factors, the working efficiency is likely to be reduced. Summary of the Invention

[0005] The present invention provides a coal crushing and grinding device with an anti-blocking function, which solves the technical problem that in the related art, in the process of crushing coal raw materials, the existing crushing and grinding equipment often crushes gangue together with coal, which results in a large amount of solid waste being mixed in the coal entering the subsequent grinding process, thereby affecting the normal operation of the equipment.

[0006] The present invention provides a coal crushing and grinding device with an anti-blocking function, including: a first housing, an inlet is provided on the upper side of the first housing;

[0007] A first grinding unit, disposed inside the first housing; the first grinding unit includes a first rotating shaft rotatably disposed on the first housing, a driving device for driving the first rotating shaft to rotate is provided on the first housing, and a first grinding roller is fixedly connected to the first rotating shaft and is eccentrically arranged with it;

[0008] The crushing unit is arranged on the first housing; the crushing unit includes at least one first mounting frame fixedly installed on the first housing, a first frame plate and a second frame plate are rotatably connected to the first mounting frame, and the second frame plate is located above the first frame plate. A plurality of first cross plates are fixedly connected to the inner side of the first frame plate, and a plurality of second cross plates are fixedly connected to the inner side of the second frame plate. The first cross plates and the second cross plates are arranged in a staggered manner. A plurality of crushing cones are fixedly connected to the opposite sides of the first cross plates and the second cross plates. One end of the first rotating shaft without a driving device fixedly connected to a cam. A pair of L-shaped plates are slidably arranged on the first housing. Each end of the L-shaped plate away from the cam has at least one convex part. At least one guide plate is fixedly connected to each of the first frame plate and the second frame plate. Each guide plate is provided with a guide groove for the corresponding convex part to be embedded and slide.

[0009] Preferably, an air blowing unit is arranged on the first housing. The air blowing unit includes a cover plate fixedly installed above the second frame plate. At least one first air hole is penetrated through the cover plate. The cover plate is fixedly installed with the same number of first air pipes corresponding to the first air holes. The first air holes and the first air pipes are concentrically arranged. The first housing is fixedly installed with the same number of second mounting frames corresponding to the first air pipes. Each second mounting frame is fixedly installed with a second air pipe. A conical pipe is fixedly installed in the second air pipe, and the end with a smaller opening of the conical pipe faces downward. A corrugated pipe is fixedly connected to each second air pipe and is communicated with it. The end of the corrugated pipe away from the second air pipe is fixedly connected and communicated with the corresponding first air pipe. A hose is fixedly connected to each second air pipe and is communicated with it. The end of the hose away from the second air pipe is fixedly connected and communicated with the first housing.

[0010] Preferably, a second grinding unit is arranged on one side of the first housing away from the driving device. The second grinding unit includes a second housing fixedly installed on one side of the first housing away from the driving device. A pair of second rotating shafts arranged in parallel are rotatably connected to the second housing. A second grinding roller is fixedly connected to each second rotating shaft. One of the second rotating shafts is fixedly connected to the first rotating shaft. Gears are fixedly installed at the ends of the two second rotating shafts extending outside the second housing. The two gears are meshed with each other. A pair of symmetrically arranged inclined plates are fixedly connected inside the second housing.

[0011] Preferably, the first housing is fixedly connected with the same number of filter nets corresponding to the hoses. Each filter net is concentrically arranged with the corresponding hose.

[0012] Preferably, the driving device includes a servo motor fixedly installed on the first housing, and the output shaft of the servo motor is fixedly connected to the first rotating shaft.

[0013] Preferably, a long protective plate and a short protective plate are fixedly connected to the first housing, and a part of the plate body of the long protective plate is fixedly connected to the second housing.

[0014] Preferably, a protective case is fixedly connected to the second housing, and both of the two gears are located inside the protective case.

[0015] Preferably, a first discharge pipe is fixedly connected to and communicates with the bottom of the first housing, and a second discharge pipe is fixedly connected to and communicates with the bottom of the second housing.

[0016] Preferably, a support plate is fixedly connected to the first housing, and a feed plate is fixedly connected to the support plate.

[0017] Preferably, a plurality of support feet are fixedly connected to the bottoms of both the first housing and the second housing.

[0018] The beneficial effects of the present invention are as follows:

[0019] 1. The present invention adopts the technical means of cooperating the first grinding unit and the crushing unit. The cam is continuously rotated by the first rotating shaft, and then the same-side up and down movement of the first frame plate and the second frame plate is driven. During the process of the first frame plate and the second frame plate approaching and separating from each other, the preliminary crushing of coal and the separation of gangue are completed, and the crushed coal is sent into the first grinding unit for grinding, overcoming the deficiencies of the prior art, ensuring the normal operation of the equipment, and effectively preventing the equipment from being blocked.

[0020] 2. The present invention adopts the technical means of cooperating the air blowing unit and the first grinding unit. The cover plate is driven to reciprocate within a small range by the second cross plate, and then the corrugated pipe is repeatedly compressed and extended, and the heated air in the first housing is intermittently sucked out by the conical pipe and sprayed onto the first cross plate, so as to quickly dry the relatively humid coal particles adhered to the first cross plate and make them fall off, thereby improving the practicability of the device.

[0021] 3. The present invention adopts the technical means of cooperating the second grinding unit and the first grinding unit. While the first cross plate sends the crushed coal into the first housing for grinding, the gangue that cannot be crushed is intermittently shaken onto the inclined plate, and then slides down the inclined plate into the second housing to be crushed, further improving the practicability of the device. Description of the Drawings

[0022] Figure 1 is the overall structural schematic diagram of the present invention;

[0023] Figure 2It is a three-dimensional structural schematic diagram of the present invention for showing the support plate and the feeding plate;

[0024] Figure 3 It is a three-dimensional structural schematic diagram of the present invention for showing the overall structure of the first grinding unit;

[0025] Figure 4 It is a sectional structural schematic diagram of the present invention for showing the inside of the first housing;

[0026] Figure 5 It is a three-dimensional structural schematic diagram of the present invention for showing the crushing unit and the gear;

[0027] Figure 6 It is a three-dimensional structural schematic diagram of the present invention for showing the air blowing unit;

[0028] Figure 7 It is a three-dimensional structural schematic diagram of the present invention for showing the first rotating shaft and the cam;

[0029] Figure 8 It is a three-dimensional structural schematic diagram of the present invention for showing the second air delivery pipe and the conical pipe;

[0030] Figure 9 It is a sectional structural schematic diagram of the present invention for showing the inside of the second housing.

[0031] In the figure: 100, the first housing; 200, the first grinding unit; 300, the crushing unit; 400, the air blowing unit; 500, the second grinding unit;

[0032] 101, the first discharge pipe; 102, the support plate; 103, the feeding plate; 104, the support feet;

[0033] 201, the first rotating shaft; 202, the first grinding roller; 203, the servo motor; 204, the long protective plate; 205, the short protective plate; 206, the protective shell;

[0034] 301, the first mounting bracket; 302, the first frame plate; 303, the second frame plate; 304, the first cross plate; 305, the second cross plate; 306, the crushing cone; 307, the cam; 308, the L-shaped plate; 309, the guide plate;

[0035] 401, the cover plate; 402, the first air delivery pipe; 403, the second mounting bracket; 404, the second air delivery pipe; 405, the conical pipe; 406, the corrugated pipe; 407, the hose; 408, the filter screen;

[0036] 501, the second housing; 502, the second rotating shaft; 503, the second grinding roller; 504, the gear; 505, the inclined plate; 506, the second discharge pipe. Detailed implementation manners

[0037] Reference will now be made to example embodiments to discuss the subject matter described herein. It should be understood that discussing these embodiments is only to enable those skilled in the art to better understand and thus implement the subject matter described herein. Without departing from the scope of protection of the content of this specification, changes can be made to the functions and arrangements of the elements discussed. Each example can omit, substitute, or add various processes or components as needed. Additionally, the features described in some examples can also be combined in other examples.

[0038] As Figure 1 - Figure 9 shown, this embodiment provides a coal crushing and grinding device with an anti-clogging function, including: a first housing 100, a feed port is opened on the upper side of the first housing 100, a first grinding unit 200 is arranged inside the first housing 100, the first grinding unit 200 includes a first rotating shaft 201 rotatably arranged on the first housing 100, a driving device for driving the first rotating shaft 201 to rotate is arranged on the first housing 100, a first grinding roller 202 eccentrically arranged with the first rotating shaft 201 is fixedly connected to the first rotating shaft 201, a crushing unit 300 is arranged on the first housing 100, the crushing unit 300 includes at least one first mounting bracket 301 fixedly installed on the first housing 100, a first frame plate 302 and a second frame plate 303 are rotatably connected to the first mounting bracket 301, and the second frame plate 303 is located above the first frame plate 302. A plurality of first cross plates 304 are fixedly connected to the inner side of the first frame plate 302, a plurality of second cross plates 305 are fixedly connected to the inner side of the second frame plate 303, and the first cross plates 304 and the second cross plates 305 are arranged in a staggered manner. A plurality of crushing cones 306 are fixedly connected to the opposite sides of the first cross plates 304 and the second cross plates 305. One end of the first rotating shaft 201 without the driving device is fixedly connected to a cam 307. A pair of L-shaped plates 308 are slidably arranged on the first housing 100. Each end of each L-shaped plate 308 away from the cam 307 has at least one convex portion. At least one guide plate 309 is fixedly connected to each of the first frame plate 302 and the second frame plate 303. A guide groove for the corresponding convex portion to be inserted and slide is opened on each guide plate 309.

[0039] The working principle and beneficial effects of the above technical solution are as follows: First, start the driving device. The driving device drives the first rotating shaft 201 to rotate, and the first rotating shaft 201 drives the first grinding roller 202 to rotate synchronously, preparing for grinding coal.

[0040] Meanwhile, the first rotating shaft 201 drives the cam 307 to rotate synchronously. During the rotation of the cam 307, it first contacts the bottom of the L-shaped plate 308 that cooperates with the second frame plate 303 and pushes it upward. During the upward movement of the L-shaped plate 308, the convex part on it slides in the guiding groove on the corresponding guiding plate 309, thereby driving the second frame plate 303 to rotate around the connection point between itself and the first mounting frame 301, causing the second frame plate 303 to first flip upward. Then, the rotating cam 307 starts to contact and push another L-shaped plate 308. Similarly, the first frame plate 302 rotates around the connection point between itself and the first mounting frame 301. Since the length of the vertical plate part of the L-shaped plate 308 that cooperates with the first frame plate 302 is shorter, the rotation angle of the first frame plate 302 is smaller than that of the second frame plate 303. After the cam 307 rotates to the position where it disengages from the two L-shaped plates 308 simultaneously, the two L-shaped plates 308 start to fall under the action of gravity. The first frame plate 302 is reset first, and the second frame plate 303 is reset after the first frame plate 302 is reset. Since the cam 307 rotates continuously, the first frame plate 302 and the second frame plate 303 can repeat the above operations cyclically.

[0041] During this process, the raw coal material is poured on the side of the first frame plate 302 close to the first mounting frame 301. During the repeated small-angle rotation of the downward-sloping first frame plate 302, the raw coal material rolls down along the multiple first cross plates 304 on the first frame plate 302. The crushing cones 306 on the cross plates can play a certain blocking role and reduce its rolling speed. The second frame plate 303, during the reciprocating falling process, drives the crushing cones 306 on its multiple second cross plates 305 to repeatedly hit the rolling raw coal material. Since this force is moderate, only the relatively soft coal during rolling can be crushed, making its volume smaller. The coal whose volume meets the grinding requirements falls into the outer shell 100 through the gaps between the multiple first cross plates 304 and is ground into granular by the first grinding roller 202 that is eccentrically arranged with the first rotating shaft 201. The gangue and other solid wastes are relatively hard and difficult to be crushed. During the repeated rotation of the first cross plates 304, they will gradually slide down from the first frame plate 302 and the multiple first cross plates 304, completing the screening work of coal and solid wastes.

[0042] This embodiment adopts the technical means of the cooperation between the first grinding unit 200 and the crushing unit 300. The first rotating shaft 201 drives the cam 307 to rotate continuously, thereby driving the same-side up and down movement of the first frame plate 302 and the second frame plate 303. During the process of the first frame plate 302 and the second frame plate 303 approaching and moving away from each other, the preliminary crushing of coal and the separation of gangue are completed, and the crushed coal is sent into the first grinding unit 200 for grinding, overcoming the deficiencies of the prior art and reducing the risk of gangue damaging the grinding equipment.

[0043] In a specific embodiment: An air blowing unit 400 is provided on the first housing 100. The air blowing unit 400 includes a cover plate 401 fixedly installed on the upper side of the second frame plate 303. At least one first air hole is penetrated through the cover plate 401. The cover plate 401 is fixedly installed with a first air pipe 402 corresponding to the number of the first air holes, and the first air hole and the first air pipe 402 are concentrically arranged. The first housing 100 is fixedly installed with a second mounting bracket 403 corresponding to the number of the first air pipes 402. Each second mounting bracket 403 is fixedly installed with a second air pipe 404. A tapered pipe 405 is fixedly installed in the second air pipe 404, and the end with a smaller opening of the tapered pipe 405 faces downward. A corrugated pipe 406 is fixedly connected to and communicated with each second air pipe 404. The end of the corrugated pipe 406 away from the second air pipe 404 is fixedly connected to and communicated with the corresponding first air pipe 402. A flexible pipe 407 is fixedly connected to and communicated with each second air pipe 404. The end of the flexible pipe 407 away from the second air pipe 404 is fixedly connected to and communicated with the first housing 100.

[0044] The working principle and beneficial effects of the above technical solution are as follows: During the process of the second frame plate 303 reciprocally rotating around the connection point between itself and the first mounting bracket 301, the corresponding corrugated pipe 406 is repeatedly squeezed and stretched. During the stretching process of the corrugated pipe 406, air is inhaled from the first air hole and the inside of the first housing 100. Since the grinding work is normally carried out inside the first housing 100, the heat generated by grinding makes the nearby air warm up. The air inhaled into the corrugated pipe 406 is discharged during the compression process of the corrugated pipe 406. And because the end with a smaller opening of the tapered pipe 405 in the second air pipe 404 faces downward, at this time, most of the air is blocked by the tapered pipe 405 and discharged from the first air hole and blown towards the first cross plate 304. In this way, it circulates repeatedly. Since the humidity inside the coal is relatively high, the coal is easily adhered to the first cross plate 304 after being broken. The hot air flow blown out from the first air hole can gradually dry and blow off the coal adhered to the first cross plate 304, so that it enters the first housing 100 to be ground.

[0045] In this embodiment, the technical means of the air blowing unit 400 and the first grinding unit 200 are cooperated. The cover plate 401 is driven by the second cross plate 305 to reciprocally rotate within a small range, thereby driving the corrugated pipe 406 to be repeatedly compressed and extended. Cooperating with the tapered pipe 405, the heated air inside the first housing 100 is intermittently sucked out and sprayed towards the first cross plate 304, thereby quickly drying the relatively humid coal particles adhered to the first cross plate 304 and making them fall off, thereby improving the practicability of the device.

[0046] In a specific embodiment: A second grinding unit 500 is provided on the side of the first housing 100 away from the driving device. The second grinding unit 500 includes a second housing 501 fixedly installed on the side of the first housing 100 away from the driving device. A pair of second rotating shafts 502 arranged in parallel are rotatably connected to the second housing 501. A second grinding roller 503 is fixedly connected to each second rotating shaft 502. And one of the second rotating shafts 502 is fixedly connected to the first rotating shaft 201. Gears 504 are fixedly installed at the ends of the two second rotating shafts 502 extending outside the second housing 501. The two gears 504 are meshed with each other. A pair of symmetrically arranged inclined plates 505 are fixedly connected inside the second housing 501.

[0047] The working principle and beneficial effects of the above technical solution are as follows: The gangue and other solid wastes shaken off by the first frame plate 302 fall onto the inclined plate 505 along the trend, and under the action of gravity, slide along the inclined plate 505 into the space between the two second grinding rollers 503. The rotating first rotating shaft 201 drives the second rotating shaft 502 coaxially arranged with it to rotate synchronously, and then drives the corresponding second grinding roller 503 to rotate. At the same time, this rotating shaft also drives the corresponding gear 504 to rotate, and then drives the two gears 504 to rotate in opposite directions, so that the two second grinding rollers 503 rotate in opposite directions to complete the grinding work of the gangue and other solid wastes.

[0048] The present invention adopts the technical means of the cooperation of the second grinding unit 500 and the first grinding unit 200. While the first cross plate 304 feeds the crushed coal into the first housing 100 for grinding, it intermittently shakes off the uncrushable gangue and other solid wastes onto the inclined plate 505, so that they slide into the second housing 501 along the inclined plate 505 and are crushed, further improving the practicability of the device.

[0049] In a specific embodiment: The first housing 100 is fixedly connected with filter nets 408 corresponding to the number of the hoses 407, and each filter net 408 is concentrically arranged with the corresponding hose 407.

[0050] The working principle and beneficial effects of the above technical solution are as follows: The setting of the filter net 408 can effectively prevent the ground coal particles in the first housing 100 from being sucked into the corrugated pipe 406 and the hose 407, further improving the practicability of the device.

[0051] In a specific embodiment: The driving device includes a servo motor 203 fixedly installed on the first housing 100. The output shaft of the servo motor 203 is fixedly connected to the first rotating shaft 201.

[0052] The working principle and beneficial effects of the above technical solution are as follows: Start the servo motor 203, and the output shaft of the servo motor 203 rotates, driving the first rotating shaft 201 to rotate synchronously.

[0053] In a specific embodiment: A long protective plate 204 and a short protective plate 205 are fixedly connected to the outer shell one 100, and a part of the plate body of the long protective plate 204 is fixedly connected to the outer shell two 501.

[0054] The working principle and beneficial effects of the above technical solution are: The settings of the long protective plate 204 and the short protective plate 205 can effectively prevent coal and gangue from spilling out from the edge during the operation of the device, and further improve the stability of the device.

[0055] In a specific embodiment: A protective shell 206 is fixedly connected to the outer shell two 501, and both of the two gears 504 are located inside the protective shell 206.

[0056] The working principle and beneficial effects of the above technical solution are: The setting of the protective shell 206 can effectively prevent dust from adhering to the two gears 504 to ensure the normal operation of the gears 504.

[0057] In a specific embodiment: A first discharge pipe 101 is fixedly connected to and communicates with the bottom of the outer shell one 100, and a second discharge pipe 506 is fixedly connected to and communicates with the bottom of the outer shell two 501.

[0058] The working principle and beneficial effects of the above technical solution are: The settings of the first discharge pipe 101 and the second discharge pipe 506 can discharge the ground coal and gangue separately.

[0059] In a specific embodiment: A support plate 102 is fixedly connected to the outer shell one 100, and a feed plate 103 is fixedly connected to the support plate 102.

[0060] The working principle and beneficial effects of the above technical solution are: When feeding is required, the coal raw materials can be quickly and centrally poured from the feed plate 103 on the support plate 102. The inclined feed plate 103 can effectively prevent the raw materials from spilling out and improve the practicability of the device.

[0061] In a specific embodiment: A plurality of support feet 104 are fixedly connected to the bottoms of both the outer shell one 100 and the outer shell two 501.

[0062] The working principle and beneficial effects of the above technical solution are: The setting of the support feet 104 can improve the stability of the device.

[0063] The above describes the embodiments of the present invention, but these embodiments are not limited to the above specific implementation manners. The above specific implementation manners are merely illustrative and not restrictive. Under the inspiration of this embodiment, those of ordinary skill in the art can also make many forms, all of which fall within the protection scope of this embodiment.

Claims

1. A coal crushing and grinding device with an anti-blocking function, characterized in that, Including: A first housing (100), a feed inlet is provided on the upper side of the first housing (100); A first grinding unit (200), arranged inside the first housing (100); the first grinding unit (200) includes a first rotating shaft (201) rotatably arranged on the first housing (100), a driving device for driving the first rotating shaft (201) to rotate is arranged on the first housing (100), and a first grinding roller (202) eccentrically arranged with the first rotating shaft (201) is fixedly connected to the first rotating shaft (201); A crushing unit (300), arranged on the first housing (100); the crushing unit (300) includes at least one first mounting frame (301) fixedly installed on the first housing (100), a first frame plate (302) and a second frame plate (303) are rotatably connected to the first mounting frame (301), and the second frame plate (303) is located above the first frame plate (302). A plurality of first cross plates (304) are fixedly connected to the inner side of the first frame plate (302), a plurality of second cross plates (305) are fixedly connected to the inner side of the second frame plate (303), and the first cross plates (304) and the second cross plates (305) are arranged in a staggered manner. A plurality of crushing cones (306) are fixedly connected to the opposite sides of the first cross plates (304) and the second cross plates (305). One end of the first rotating shaft (201) without the driving device is fixedly connected with a cam (307). A pair of L-shaped plates (308) are slidably arranged on the first housing (100). Each end of each L-shaped plate (308) away from the cam (307) has at least one convex part. At least one guiding plate (309) is fixedly connected to each of the first frame plate (302) and the second frame plate (303). A guiding groove for the corresponding convex part to be embedded and slide is formed on each guiding plate (309).

2. The coal crushing and grinding equipment with a clogging prevention function according to claim 1, characterized in that, An air blowing unit (400) is provided on the outer shell one (100). The air blowing unit (400) includes a cover plate (401) fixedly installed on the upper side of the second frame plate (303). At least one first air hole is penetrated through the cover plate (401). The cover plate (401) is fixedly installed with first air pipes (402) corresponding to the number of the first air holes. And the first air holes and the first air pipes (402) are concentrically arranged. The outer shell one (100) is fixedly installed with second mounting brackets (403) corresponding to the number of the first air pipes (402). Each of the second mounting brackets (403) is fixedly installed with a second air pipe (404). A tapered pipe (405) is fixedly installed in the second air pipe (404), and the end with a smaller opening of the tapered pipe (405) faces downward. A bellows (406) is fixedly connected to and communicated with each of the second air pipes (404). The end of the bellows (406) far from the second air pipe (404) is fixedly connected to and communicated with the corresponding first air pipe (402). A hose (407) is fixedly connected to and communicated with each of the second air pipes (404). The end of the hose (407) far from the second air pipe (404) is fixedly connected to and communicated with the outer shell one (100).

3. A coal crushing and grinding device with an anti-blocking function according to claim 2, characterized in that A second grinding unit (500) is provided on the side of the outer shell one (100) far from the driving device. The second grinding unit (500) includes an outer shell two (501) fixedly installed on the side of the outer shell one (100) far from the driving device. A pair of second rotating shafts (502) arranged in parallel are rotatably connected to the outer shell two (501). Each of the second rotating shafts (502) is fixedly connected with a second grinding roller (503). And one of the second rotating shafts (502) is fixedly connected to the first rotating shaft (201). Gears (504) are fixedly installed at the ends of the two second rotating shafts (502) extending outside the outer shell two (501). The two gears (504) are meshed with each other. A pair of symmetrically arranged inclined plates (505) are fixedly connected inside the outer shell two (501).

4. A coal crushing and grinding device with an anti-blocking function according to claim 3, characterized in that The outer shell one (100) is fixedly connected with filter nets (408) corresponding to the number of the hoses (407). And each of the filter nets (408) is concentrically arranged with the corresponding hose (407).

5. A coal crushing and grinding device with an anti-blocking function according to claim 4, characterized in that, The driving device includes a servo motor (203) fixedly installed on the outer shell one (100). The output shaft of the servo motor (203) is fixedly connected to the first rotating shaft (201).

6. The coal crushing and grinding equipment with anti-blocking function according to claim 5, characterized in that, The outer shell one (100) is fixedly connected with a long protection plate (204) and a short protection plate (205). And a part of the plate body of the long protection plate (204) is fixedly connected to the outer shell two (501).

7. A coal crushing and grinding device with an anti-blocking function according to claim 6, characterized in that, A protection shell (206) is fixedly connected to the outer shell two (501). And the two gears (504) are both located inside the protection shell (206).

8. A coal crushing and grinding device with an anti-blocking function according to claim 7, characterized in that, The bottom of the first housing (100) is fixedly connected to and communicates with a first discharge pipe (101), and the bottom of the second housing (501) is fixedly connected to and communicates with a second discharge pipe (506).

9. A coal crushing and grinding device with an anti-clogging function according to claim 8, characterized in that, A support plate (102) is fixedly connected to the first housing (100), and a feed plate (103) is fixedly connected to the support plate (102).

10. A coal crushing and grinding device with an anti-blocking function according to claim 9, characterized in that, A plurality of support feet (104) are fixedly connected to the bottoms of both the first housing (100) and the second housing (501).

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